Hello everyone,My name is Ethan Wise and I am on a team of high schoolers doing the NASA SLI project. http://www.nasa.gov/offices/education/programs/descriptions/Student_Launch_Projects.htmlWe are using an Arduino UNO to controll 3 sensors that we will have running simultaneously during the flight of our rocket. We have came across a problem. We do not know how to have the data from our sensors stored while the Arduino is disconnected from the computer. The sensors are pressure/temperature breakout board, humidity breakout board, and a light sensor. We will need to recover this data to put in a spread sheet after we recover our rocket. I have attached a picture of what we have so far. Please help!!!

Hi Ethan, sounds like a cool project 5min x 60sec are 300 records. one record per second shouldn´t be difficult with an SD card, down to 10 records per second (we are talking 512Byte Blocks!) should also be no problem with a good SD card. Below that you may hit SD card writing latencies, ie you could loose some measurements. How critical would this be for your project ?I wonder about the mechanics, ie if the SD card and slot (e.g. in an SD card shield) would need some extra gluing or so. I assume the acceleration of the rocket will be big, if it stays in the air for 5 minutes).

Another option would be EEPROM, but I have no experience on that. There are however some posts on this topic in this forum. RAM you probably don´t want to use; just in case the UNO reboots during flight, this may be lost.